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    "# MULTIPLE_SUBGRAPHS\n",
    "\n",
    "You are calling subgraphs multiple times within a single LangGraph node with checkpointing enabled for each subgraph.\n",
    "\n",
    "This is currently not allowed due to internal restrictions on how checkpoint namespacing for subgraphs works.\n",
    "\n",
    "## Troubleshooting\n",
    "\n",
    "The following may help resolve this error:\n",
    "\n",
    "- If you don't need to interrupt/resume from a subgraph, pass `checkpointer=false` when compiling it like this: `.compile({ checkpointer: false })`\n",
    "- Don't imperatively call graphs multiple times in the same node, and instead use the [`Send`](https://langchain-ai.github.io/langgraphjs/reference/classes/langgraph.Send.html) API.\n"
   ]
  }
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